Aerospaced 3.5" 4 Piece Grinder CNC Machined 4 Piece Grinder / Sifter Magnetic Lid Aerospaced grinders are an affordable option to your grinder needs. The Aerospaced Grinder brand is CNC machined and anodized for a durable body. This grinder is 3.5" in diameter containing 4 pieces. The lid of the grinder is reinforced with magnets. This holds the lid together when not in use for a next to air-tight seal. Aerospaced Grinder Teeth are razor sharp and diamond cut to easily shred your dry blends. Aerospaced 4 Piece Grinders include from top to bottom the grinder layer, storage layer, sifter screen, then pollen collection section. This grinder does everything you need in one unit. Each Aerospaced grinder is available in 5 different colors ( Black, Blue, Green, Red, Silver) and comes with a storage pouch and pollen scraper tool.